擅长:python、mysql、java
<pre><code>#!/usr/bin/python
filename='thefile.txt'
search="class Parking(models.Model):"
add="\n layer_id= models.ForeignKey('sdr_layer.id')"
content=open(filename,'r').read()
content=content.replace(search,search+add)
fp=open(filename,'w')
fp.write(content)
fp.close()
</code></pre>